In a reaction,
$2\text{N}_2\text{O}_{5(g)} \rightarrow 4\,\text{NO}_{2(g)} + \text{O}_{2(g)}$
$\text{N}_2\text{O}_5$ disappears at a rate of $0.06$ mol dm$^{-3}$ s$^{-1}$
Calculate rate of formation of $\text{O}_{2(g)}$ ?

Identify the term used to describe movement of colloidal particles under applied electric potential without using semipermeable membrane.

Which element from following has highest melting point?

Identify the catalyst used in synthesis of gasoline by Fischer Tropsch process.